Cable protecting device



Dec. 6, 1938. WEGGUM 2,139,396.

CABLE PROTECTING DEVICE Filed June 6, 1936 Patented Dec. 6, 1938 i UNITED STATES PATENT OFFICE 2,139,396 CABLE PROTECTING DEVICE Gust Weggum, Cooley, Minn, assignor to The Reclamation Company, a corporation of Delaware Application June 6, 1936, Serial No. 83,927

4 Claims. (Cl. 254-190) It is an object of this invention to provide a formed. These flanges are preferably formed novel and efficient device adapted to be secured With arcuate end surfaces abutting against the to a cable adjacent to: a fixed head or end fashead 1 and perform the function of retaining tening member on the cable and so formed and the cable in alignment with the groove it while 5 arranged relative to a sheave or drum over which permitting movement of the cable to a tangential 5 the cable is trained that abrupt bending of the position relative to said groove. A bolt i4 is fascable is prevented when, for example, such head tened in perforations near the outer ends of the is brought into contact with the sheave or drum flanges l3 to confine the cable and limit movement at the extremity of the movement permitted by thereof relative to attachment. The free end lo said head. 6a of the cable 6 is preferably confined between 10 One important field of use for the present dethe guide flanges it to aid in maintaining the device is on the cables for operating the dippers of vice 5 in proper alignment with the groove in the power shovels. Heretofore, in the operation of pulley 8. such shovels, expensive interruptions for repairs An important use of the device is illustrated in 5 v e m necessary by he reak ng of the Fig. 1. As here illustrated, the device 5 is secured cables W e t ey ave been be t abruptly in to the cable 6 adjacent to the head i which semt Su h b di g O ten Oc urs t t cures an end of said cable toa dipper sheave junction of the cable with the head secured block l5 attached in suitable manner to a dipper to the end of the cable, because, as the bucket or 01' bucket It of a power shovel. The shovel has dipper is drawn to the pp eXtlemity of its a dipper handle I! which is pivoted and movable movement, the head starts around the b m longitudinally relative to a boom is. The cable point sheave and a p y bends the Cable- I 6 is employed to raise the dipper and is trained provide an inexpensive device for guarding n the boom oint sheaves 8. ains t b a e re u t g from such bends. In operation the dipper is frequently raised to 5 Referring to the pa y a which the upper extremity of its movement. When this illustrates the best fo m Of my d v c at p e occurs the head '7 engages and starts around the known to me, sheave 8 and in the absence of my protecting de- F ur 1 i a dia r mm tic ide l v i n sh W- vice, the cable is abruptly bent at the point where e y device ta d to a p we s ove the tangent to the sheave groove intersects the 2 is de elev t on O t e d vice n y plane where the cable enters the head 1. Such 30 new combination with a cable, head and sheave, abrupt bending causes the cable to break frethe latter being shown partly in central, vertical quently and costly shutdowns for repairs are section, and necessary.

Fi s. 3 and 4 are sec ions ta en r p v By the use of my device it will be evident from on the lines 33 and 4-4 of Fig. 2. Fig. 2 that abrupt bending of the cable is pre- 35 My device, indicated generally by the numeral vented without interfering with the full range of 5, is shown attached to a cable 6 adjacent to a movement of the bucket. The wedge-shaped head I for securing an end of the cable to a part body of the member 5 passes into the groove of to be operated thereby and the cable is shown the sheave while the cable 6 is gradually bent trained on a sheave 8. An inner edge 9 of the around the arc of the groove [0. In passing into 40 device has an arcuate form adapted to fit in the engagement with the sheave, the head ll moves peripheral groove in the sheave 8, as indicated relative to the device 5 within the range perin Fig. 2, and extending longitudinally of the mitted by the guide flanges l3 so that the cable outer edge of the device is an arcuate groove it! passes freely, smoothly and Without sharp bend to receive the cable 6. The groove II! is not conto the upper extremity of movement permitted by centric with the arcuate edge 9 but diverges the head 1. therefrom toward the head 1 so that the part of Having d cribed my invention, what I l i the device Which Separates the Cable from the as new and desire to protect by Letters Patent is: sheave is approximately wedge shaped longi- 1. The combination with a cable, a head setudinally. cured to said cable and a sheave having a groove 50 To secure t e d v the Cable, I provide a in which said cable is trained, of an arcuate propair of lugs Ii projectin a a point e oved tecting device secured to said cable adjacent to from the h ad 7 a these lugs are perforated to said head, said device extending circumferentially receive a C p 100113 Neal the larger to said sheave between said cable and sheave and of the dev ce, a p of guide flanges '3 a e havingachannel for said cable merging gradual- 55 ly into the groove of said sheave to cause said cable to bend gradually from said sheave to said head when said head is actuated to contact the periphery of said sheave.

2. The combination with a cable, a head secured to said cable and a sheave having a peripheral groove in which said cable is trained, of a protecting device secured to said cable adjacent to said head, said device having a tapered end adapted to enter said groove and a channel for said cable merging gradually into the groove of said sheave to afford a guide for said cable insuring gradual bending of the cable from said sheave to said head when said head is actuated against said sheave.

3. The combination with a cable, a head secured to said cable and a sheave having a groove in which said cable is trained, of a cable protecting device extending longitudinally of said cable adjacent to said head, means securing said device at a point remote from said head to said cable, the inner surface of said device being formed to fit in said groove, and the outer surface thereof being formed with a groove diverging from said inner surface toward said head to receive said cable, and a guide for said cable comprising parallel flanges projecting from said device substantially perpendicularly to the axis of said sheave adjacent to said head and permitting relative movement between said head and device, in the plane of said sheave.

4. The combination with a cable, a head secured to said cable and a rotary member on which said cable is trained, of a cable protecting device extending longitudinally of said cable adjacent to said head, means securing said device at a single point to said cable, the inner, longitudinal surface of said device being formed to engage the circumference of said rotary member, and the outer surface thereof diverging from said inner surface toward said head to receive said cable and a guide for said cable comprising parallel flanges integral with said device and projecting substantially perpendicularly to the axis of said rotary member at a point remote from said securing means and permitting relative movement between said head and device radially of said rotary member.

GUST WEGGUM. 

